IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
pigeon-hole
1
1
1
1
1
2
1. n :
2. m :
3. f :
n

m
4.
a1,a2:
n. f(a1) = f(a2) 
a1 = a2
5. p :
m
(
List)
6. sum(||p(j)|| | j < m) = n
7.
j:
m, x,y:
||p(j)||. x<y 
(p(j))[x]>(p(j))[y]
8.
j:
m, x:
||p(j)||. (p(j))[x]<n & f((p(j))[x]) = j
9. j :
m
10.
x:
||p(j)||. (p(j))[x]<n & f((p(j))[x]) = j
11.
x,y:
||p(j)||. x<y 
(p(j))[x]>(p(j))[y]
12.
||p(j)||
1
13. (p(j))[0]<n
14. f((p(j))[0]) = j
15. (p(j))[1]<n
16. f((p(j))[1]) = j
17. (p(j))[0]>(p(j))[1]
(p(j))[1]
n
Generated subgoal:
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html